After a series of punches from Muse, officials called the fight just two minutes into the second round. Shortly after in the locker room, White collapsed from what Hardrock MMA media director Gary Thomas said was believed to be a "cardiac event."

White was taken to KentuckyOne Health Sts. Mary & Elizabeth Hospital and the Hardrock MMA event was canceled for the evening.

"Mr. White was attended to by a licensed ringside physician and first responders immediately following his bout, and he received on-site medical attention before being transported via ambulance to the hospital," a statement in July from the Kentucky Boxing and Wrestling Commission said. "Our thoughts are with the family and friends of Donshay White following his passing on Saturday."

The Kentucky Boxing and Wrestling Commission is reviewing all of the details surrounding the event, according to the statement.

A spokeswoman for the commission did not immediately respond to a request for comment left around 3 p.m. Thursday.

White was a relatively new fighter in the mixed martial arts community, Thomas said. He had one fight on his record, which he won by knockout in 2015.

Reach Reporter Thomas Novelly at 502-582-4465 or by email at tnovelly@courier-journal.com. Follow him on Twitter @TomNovelly.